Congratulations — you managed to get an interview for a position at your dream company. But don't start celebrating just yet.

It's not enough to get your foot in the door; you also have to make the right impression when you interview. From wearing the right clothes to making eye contact with the hiring manager, small gestures can have a big effect on your career prospects. Here are 20 interview tips from the pros to help you land the job and take the next step down the road to success.

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1. Dress the Part

An impeccable appearance will boost your confidence, according to Wendy Green, corporate coach and author of “50 Things You Can Do Today to Boost Your Confidence.” Prepare your interview attire days in advance.

Also, make sure your outfit is dry cleaned and ready to wear. Dress in a manner that is appropriate for the role for which you are interviewing, ensure that your hair is tidy and clean your fingernails. Keep jewelry, visible tattoos and piercings to a minimum.

2. Research the Company and Role

What type of person is the company seeking? What skills should that person have? Assess existing staff and the corporate culture by doing your research about the company and the role you're seeking before the interview. This will help you come up with questions to ask during the job interview. Lots of free job-hunting apps have great background information for you to use.

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3. Prepare Insightful Interview Questions

It's important to prepare questions to ask at an interview. Your questions reflect your interest and knowledge. But, "you should also not ask questions that can be easily researched," said Dr. Heather Rothbauer-Wanish, owner of Feather Communications, which provides professional writing services and training to businesses and individuals. "For example, asking about the organizational mission statement is not a good idea if that information is clearly posted on the company website.”

Instead, show interest in the interviewers by asking questions such as “What is your favorite part about working here?” and "What does the typical day-to-day look like for someone in this role?"

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4. Show Up on Time

While arriving late is largely avoidable, it's still a common complaint among interviewers. Gary McKraken, author of “Successful Interview Tips, Techniques and Methods for Job Seekers and Career Changers,” suggests, “Do a spot of reconnaissance first so you know where [the company] is, how to get there, where to park or what the public transport links are.”

If you are delayed for some reason and will be at least seven minutes late, show respect by calling the company and asking whether you should attend or reschedule.

5. Know Your Interviewers

Find out the names of your interviewers ahead of time and research their areas of expertise. To really knock an interviewer’s socks off, when responding to one participant, refer to another by name. For example, “To follow up on my response to Carol …” Remembering names is a difficult skill to master but one that leaves a lasting impression.

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6. Smile and Be Courteous

According to a survey conducted by Harris Poll on behalf of CareerBuilder, hiring managers say failing to make eye contact is a mistake made by 67 percent of job candidates. Not making eye contact during an interview could imply that you're not paying attention. Additionally, nearly 40 percent of candidates fail to smile.

Nonverbal behavior can be more important than what you say and, according to Psychology Today, smiling “opens doors.” To be approachable and engaging during your job interview, practice shaking hands, smiling, making eye contact and making small talk.

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7. Be Careful of What You Say and Do While Waiting

You can read company brochures or scan the room for awards to refer to in the interview while waiting for your appointment. However, the Belgian firm Pauwels Consulting advises careful selection of reading materials: “Don’t take a financial paper or an annual financial report off the table if you don’t have a substantiated opinion on finances. Imagine what would happen if the recruiter asks you about your opinion, and you can’t give a satisfactory answer.”

Other tips from the consulting firm: Don't bring your own irrelevant reading materials (like a magazine or book), don’t pull out your phone and don't look worried or indifferent.

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8. Ask for the Job

Laurie Berenson, master resume writer of Sterling Career Concepts, said, “Don't be afraid to ask for the job … tell the interviewer that you're interested in the role, that you feel you are a strong fit and would love to continue with the process.”

According to Berenson, being direct can give you a leg up on other candidates.

“You won't leave them guessing as to your interest level, and you might just come out on top of another equally qualified candidate who rushed out without reiterating enthusiasm for the role," she said.

9. Prepare for the ‘Weakness’ Question

In deciding how to prepare for an interview and predicting the questions that might arise, try to determine what the questions are really asking. So when you're asked to describe your greatest weakness, remember that the interviewer wants to see if you can demonstrate a commitment to personal growth.

According to Dorie Clark, marketing strategy consultant and professor at Duke University’s Fuqua School of Business, "The secret to acing this trick interview question is to give an honest answer and then explain what you're doing to overcome that weakness.”

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10. Talk About the Value You’ll Add to the Company

Here's a not-so-secret tip for job seekers: Most employers want to hear that you will assimilate quickly and effectively contribute to the company’s future. Address these issues, and you might just get your dream job.

11. Stay Focused

During an interview, it's important to stay focused on the questions the interviewer asks. In other words, don't ramble. When asked a question, take a moment to think about the question and how you plan to answer. Keep your response short and to-the-point, and don't let your example or anecdote go on too long. By staying on topic, you prove to the interviewer that you can remain focused, calm and articulate in a high-pressure situation.

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12. Sound Confident

Preparation is the key to confidence. Boost your confidence level by arming yourself with the best ammunition — robust, rehearsed and relevant responses. Understand your prospective role and provide concise examples that support your suitability. Using quantitative measures in your responses can help you sound confident, as well. For example, you can say something like, "My latest marketing campaign increased sales by 36 percent."

13. Don’t Fidget or Bite Your Nails

Nervous, distracting movements don't convey confidence. “I once had an interviewee who swept his hand back and forth across the table for the entire interview," wrote Katharine Hansen for Quintessential Careers, a career development site. "Another sniffed loudly and nervously throughout the session. Both were unaware of what they were doing. Some typical inappropriate behaviors are tapping, drumming, leg shaking, fidgeting and twirling in a swivel chair.”

If you tend to display nervous habits during job interviews, a mock interview with an associate, college professor or even a friend can help you recognize those habits and eliminate them.

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14. Pay Attention to Your Voice and Tone

Use a strong voice if you tend to speak quietly. Hansen’s recommendation is to avoid “pause words and phrases, such as 'uh', 'ah,' 'um,' 'like,' 'you know'.” Instead, be definitive in your answers and avoid “raising your voice in a questioning manner or speaking in a sing-song rhythm,” Hansen said.

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15. Explain Why You’re Switching Jobs in a Positive Manner

You will most likely get asked, "Why are you looking to leave your current company?" So, it's important that you prepare a positive response to this question — even if you hate your current boss. In a blog for the Huffington Post, Liz Ryan, of publishing firm and consulting business Human Workplace, advises a response such as, “I'm looking to work more independently in my next job, in a company that needs people who can figure out what to do and how to do it.”

But what if the real reason you're switching jobs is because you want a higher salary? Ryan suggests saying, “I wasn't going to be able to grow in that job.” Whatever you do, don't complain about your employer, colleagues or assignments.

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16. Prove That You Fit the Company Culture

"You can't train for cultural fit," said author Dan Schawbel in an interview with Business News Daily. "If an employee doesn't fit the mold, then it's going to be nearly impossible to force it on them. They will eventually get frustrated and quit because they will want something that you can't provide them."

17. Connect With the Interviewer

It's a known fact that people relate to others who remind them of themselves. So, establish a connection with your interviewer to increase your chances of being selected. Research your interviewer on LinkedIn and Google to find a common factor that you can mention early in the interview. For example, perhaps you share an alma mater, have an interest in a particular sport or have lived in the same area. When appropriate, mention one of these similarities during the job interview.

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18. Be Interested in the Interviewer

Charm can work wonders in an interview. Bill Fish, president of Reputation Management Consultants, said, “Ask questions to the person performing the interview. It’s human nature to want to talk about yourself. Ask them how long they have been with the company, their career path [and] ask pointed questions about the business that you researched prior to coming to the interview.”

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19. Thank Your Interviewers

Thank every interviewer with a smile and a strong handshake. After the interview, send a follow-up thank-you note to each interviewer individually by email or mail, depending on the culture of the firm.

Remember that you can say more in a thank-you note after the interview. If you had a statement prepared but no opportunity to interject, write it in the note and send it as soon as you can after the interview.

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20. Follow Up

You have some control over the hiring decision post-interview. If a few days have passed since a promised response, contact the company and ask where they are in the process. “If you don't get a reply in a few days, try again," wrote Monster, a job-search site, in its interview guide. "Yes, you might occasionally annoy a frazzled hiring manager. But as long as your messages are polite and brief, most interviewers are more likely to be impressed by your perseverance, communication skills and interest in the job."

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